2² × 3 × 13 × 136987

Prime Factor Structure

Factorization String 2^2 × 3 × 13 × 136987

Distinct Prime Factors 4

Square Status No

Abundance Measure Abundant

Analytical Properties

Total Divisors 24

Divisor Sum (σ) 53,699,296

Proper Divisor Sum 32,329,324

Digit Sum / Digital Root 39 (Root: 3)

Adjacent Primes #21369949 ← → #21369989

Iterative sequence n → n/2 (if even) or 3n+1 (if odd):

21,369,972 10,684,986 5,342,493 16,027,480 8,013,740 4,006,870 2,003,435 6,010,306 3,005,153 9,015,460 4,507,730 2,253,865 6,761,596 3,380,798 1,690,399 5,071,198 2,535,599 7,606,798 3,803,399 11,410,198 5,705,099 17,115,298 8,557,649 25,672,948 12,836,474 6,418,237 19,254,712 9,627,356 4,813,678 2,406,839 7,220,518 3,610,259 10,830,778 5,415,389 16,246,168 8,123,084 4,061,542 2,030,771 6,092,314 3,046,157 9,138,472 4,569,236 2,284,618 1,142,309 3,426,928 1,713,464 856,732 428,366 214,183 642,550 321,275 963,826 481,913 1,445,740 722,870 361,435 1,084,306 542,153 1,626,460 813,230

Other feeder batches with open delivery windows. Each feeder keeps its own target batch.